11.5.1 Creating sdt Probes

If you are a device driver developer, you might be interested in
creating your own sdt probes for your Oracle Linux
driver. The disabled probe effect of SDT is essentially the cost
of several no-operation machine instructions. You are therefore
encouraged to add sdt probes to your device
drivers as needed. Unless these probes negatively affect
performance, you can leave them in your shipping code. See
Chapter 14, Statically Defined Tracing of Kernel Modules.